Wooden framed casement windows - antique black ironmongery

[scouse52]

Hi, I have some wooden framed double glazed windows. I would like to change the existing style of handle for something more in keeping with the age of the property. The handles must fit the existing espagnolette locking mechanism. Whilst I've found some "antique" black "monkey tail" handles none of them fit as each must abut flush with the centre mullion when closed. Does anyone know of any handles that might suit?